Adjustable casing-tongs.



WITNESSES W. S. BRUMMETT.

ADJUSTABLE CASING TONGS. APPLICATION FILED NOV. 19, 1012.

Patented Sept. 23, 1913.

"II/ f INVENTOR A [10mm] WILLIAM S. BRUMME'IT, 0F COALINGA, CALIFORNIA.

ADJUSTABLE CASING-TONGS.

Specification of Letters Patent.

fa'tented Sept. 23, 1913.

Application filed November 19, 1912. Serial No. 732,306.

To all whom it may concern Be it .lcnown that I, l VILLIAM til. BRUM- METT, citizen of the United States, residing at (loalinga, in the county of Fresno and State of California, have invented certain new and useful. improvements in Adjustable Casing-l.ongs, of which the following is a specification.

The present invention relates to certain new and useful ilnproven'ients in casing tongs, and has for its object to provide a device of this character which is colnparatively simple and inexpensive .in its construction, and which embodies novel features of (:OIlStl'llCtiUll whereby adjustment may readily be made to iwconuntnlatc the tongs to various sizes of casings.

A further object of the invention is to provide an adjustable casing tongs which comprises few and, durable parts, which can be quickly applied to a casing or removed therefrom, and which is peculiarly designed so as to always obtain a tirin and effective grip upon the casing.

WVith these and other objects in view, the invention consists in certain novel combinations and arrangements of the parts-as will more fully appear as the description proceeds, the novel features thereof being pointed out in the appended claims.

For a full understanding of the invention, reference is to be had to the following description and accompanying drawing, in which:

Figure l is a plan view of an adjustable casing tongs constructed in accordance with the invention, the tongs being shown in full lines as applied to a large size casing, and in dotted lines as applied to a small size casing. Fig. 2 is an edge view of the stock. Fig. 3 is a similar view of the lever and movable jaw. Fig. 4tis a transverse sectional view on the line 4l4t of Fig. 1, and Fig. 5 is a sectional view on the line of Fig. 1.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawing by the same reference characters.

Specifically describing the present embodiment of the invention, the numeral 1 designates the stock of the casing tongs, the said stock being preferably in the form of a bar which has a substantially T-shaped cross section, as indicated more clearly by Fig. 5. The flat edge of the stock is designed to face the casing which is gripped by the tongs, while the web portion serves to reinforce the stock so that the heavy bending stresses can be readily resisted. One end of the stock l is provided with a handle 2 for convenience in manipulating the im- Pltllltlll, while. the opposite end of the stock is formed with a bifurcated head 2-) which is inclined laterally from the stock.

A slide ll: is mounted upon the stock 1. to move longitudinally thereon, and carried by this slide is an arm 5 which projects laterally from the stock at substantially right angles thereto. This arm 5 is shown as having a substantially T' shaped cross section similar to the cross section of the stock 1, the [lat edge thereof being designed to face toward the casing being gripped by the nnplcnicnt, while the web portion thereof serves as a reinforcing incans. At the junction of the lateral arm 5 and the slide -1- a triangular web (5 is provided, the said web extendingalongandbearing against the face of the stock 1 so as to have a tendency to hold the arm 5 securely in a position at substantially right angles to the stock.

A slide or runner 7 is mounted upon the lateral arm .1 so as to be adjustable longitud inal ly thereon, the said runner being formed with a shoe or jaw 8 which has a curved casing engaging far: 9 and is provided with a series of teeth 10. The jaw 8 can be moved in and out upon the lateral arm 5 and thereby positioned or adjusted so as to operate in the most ell'ectivc manner upon various sizes of easin For the purpose of holding the runner in an adjusted position, a pawl 11. is provided, the said pawl being pivoted upon the runner and being adapted to engage the teeth 12 in the rear edge of the lateral a rin in a similar inanncr it will be observed that the slide l: is provided with a pawl 13'; which is adapted to engage teeth l-pl: in the rear edge of the stock l for the purpose of holding the slide .in properly adjusted positions.

A lever or harulle to is pivotally mounted within the bifurcated portion of the head 3, the pivot bolt l6 being provided at opposite ends thereof with the loops or keepers 17 which are adapted to be engaged by a cable or line for the suspension of the tongs when such is convenient or desirable. The inner end of the lever 15 is provided with a shoe or jaw 18 which is provided with the casing engaging teeth 19 and is adapted to engage the opposite side of the casing fro-m that engaged by the shoe 8. A leaf spring 19 has one end thereof secured to the lever or handle 15 by suitable fastening members such as the screws 20, while the opposite end of the spring bears loosely against the side of the head 3 and normally tends to swing the lever around into a position substantially parallel with the stock 1, as indicated by dotted lines in Fig. 1. This spring serves to hold the shoe l8 in a yielding engagement with the casing while adjusting the implement.

In Fig. 1, the casing tongs are shown in full lines as properly adjusted for engaging a comparatively large size of casing A. The slide 4 is moved outwardly toward the end of the stock 1 and the runner 7 is similarly moved outwardly upon the arm 5 toward the end thereof. It will also be seen that the lever or handle 15 is swung against the tension of the spring 19 so as to bring the swinging or pivot shoe 18 in proper position for engaging the casing in the most effective manner. The adjustment for engaging a comparatively small size casing B is indicated by dotted lines upon Fig. 1, the slide 1 being adjusted upon the stock toward the head 3, and the runner 7 being moved inwardly upon the lateral arm 5. The lever 15 is also swung or adjusted so as to cause the shoe 18 to engage the small casing in proper manner for cooperation with the shoe 8. It will be quite obvious that the parts could be properly adjusted so as to engage any intermediate size of casing between the large size A and the small size B.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent, is 2- 1. A casing tongs including a stock provided at one end thereof with a head, a slide mounted upon the stock and formed with a lateral arm which projects at substantially right angles to the stock, means for locking the slide in an adjusted position upon the stock, a runner slidably mounted upon the lateral arm and movable toward and away from the stock, means forlocking the runner ner end with a jaw adapted to cooperate with the before mentioned shoe of the run ner toengage a casing.

2. A casing tongs including a stock provided at one end thereof with a laterally in- V clined head, a lever pivotally mounted upon the head and provided at the inner end there of with a jaw, a spring acting upon the lever and normally tending to move the same to swing the jaw toward the stock, an adjustable slide mounted upon the stock and formed with a lateral arm, a runner. adjustably mounted upon the lateral arm, and a shoe carried by the runner and adapted to cooperate with the before mentioned jaw of the lever to engage a casing. 3. A casing tongs including a stock provided at one end thereof with a laterally projecting head and having the rear edge thereof formed with teeth, a slide mounted upon the stock and formed with a laterally extending arm, the rear edge of the arm being provided with teeth, a pawl mounted upon the'slide and engaging the teeth of the stock to hold the slide in an adjusted position, a runner slidably mounted upon the lateral arm, a pawl upon the runner for engaging the teeth of the lateral arm to hold the runner in an adjusted position, a shoe carried by the runner, and a member pivotally mounted upon the head of the stock and provided with a jaw adapted to cooperate with the before mentioned shoe to engage a casing.

In testimony whereof I afliX my signature in presence of two witnesses. I WILLIAM S. BRUMMETT.

Witnesses:

A. W. BAXTER, ED DE FOREST.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, I). 0. 

